Home / 27,975.28-38,605.08-15,399.76

Finding the Fourth Proportional to 27,975.28, 38,605.08 and 15,399.76

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Solution

The fourth proportional to 27,975.28, 38,605.08 and 15,399.76 is: 21,251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,975.28 : 38,605.08 = 15,399.76 : x
  2. Step 2: Convert to fraction form
    27,975.28/38,605.08 = 15,399.76/x
  3. Step 3: Cross multiply
    27,975.28x = 38,605.08 × 15,399.76
  4. Step 4: Simplify right side
    27,975.28x = 594,508,966.78
  5. Step 5: Solve for x
    x = 594,508,966.78/27,975.28
  6. Step 6: Final answer
    x = 21,251.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.